<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <include file="public/css" />
</head>
<body>
<fieldset class="layui-elem-field layui-field-title" >
    <legend>表达式格式</legend>
</fieldset>
<img src="" alt="">
<fieldset class="layui-elem-field layui-field-title">
    <legend>常用示例</legend>
</fieldset>
<table  class="layui-table">
    <tr>
        <th>cron表达式</th>
        <th>说明</th>
    </tr>
    <tr>
        <td>*/1 * * * * *</td>
        <td>每秒钟执行一次</td>
    </tr>
    <tr>
        <td>0 */1 * * * *</td>
        <td>每分钟执行一次</td>
    </tr>
    <tr>
        <td>0 0 */1 * * *</td>
        <td>每小时执行一次</td>
    </tr>
    <tr>
        <td>0 0 */1 * * 1-3</td>
        <td>周一到周三，每小时执行一次</td>
    </tr>
    <tr>
        <td>0 0,30 18-23 * * *</td>
        <td>18点至23点，30分钟执行一次</td>
    </tr>
</table>
</body>
</html>